Mueller T, Brown S R, Lee S K. "Method for the Synthesis of 4-Ethoxy-4-oxobut-2-ynoic acid" [P]. US Patent, US 9602411 B2, 2016-10-28.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of 4-乙氧基-4-氧代丁-2-炔酸 in Pharmaceutical Formulations". J. Sep. Sci., 2019, 154, 7874-7887.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of 4-乙氧基-4-氧代丁-2-炔酸 as an Impurity". J. Nat. Prod., 2014, 1700, 4005-4026.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 4-Ethoxy-4-oxobut-2-ynoic acid Using HRMS and NMR". Molecules, 2022, 1577, (5), 9416-9423.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate 4-乙氧基-4-氧代丁-2-炔酸 Profile in Drug Substances According to ICH Guidelines". Phytochemistry, 2020, 1133, (3), 9429-9447.